OT;Tiny Nodeular thickening of Proximal Trachea? (cat Scan helpplease)

Hi Everyone, First of all I know this is nothing compared to what most
of you are going through and I apologize if I am in the wrong group.
Please tell me where it is more appropriate to post if that is the
case.

I have posted the abnormalities shown from my cat scan. I was ordered
a complete knock-out type Bronchoscopy and am curious if anyone thinks
it is worth going through that for these findings.
I was told from my doctor that it COULD be tracheal cancer (very
rare) but two (supposed) doctors from another website think it's
normal findings.
Also, does anyone know the Minimum a bronchoscopy costs? I was just
told "very expensive" from my medical clinic!

The abnormalities noted are:
*Heterogegenous (typo?) attentionuation of thyroid gland is noted
with dominant left lobe nodule measuring 1cm.
*Questionable tiny nodular mucosal thickening of proximal trachea.
* Minimal lingular pleural parenchymal scarring is noted.
They also say no dominant lung nodules, masses, or suspicious focal
parenchymal consolidation. (Could that mean there may be SOME, they
are just not dominant?)
I read that most thyroid nodules are benign but should there be any
concern for the thickened trachea along with it?
What exactly is thickened trachea please? Neoplasm, lesion, etc? My
doctor drew a picture of the trachea with a BUMP in the middle of the
inside lining. If there really was a Bump wouldn't that have said
"lesion" or "tumor" on my Cat scan report?
Thank you. Take care.Stay Strong. You will all be in my thoughts and
prayers.